/* ============================================================
   MR.VET – Cào Ngay, Trúng Lớn – Premium Design System
   Mobile-First · Professional · Enterprise-Grade
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
    /* ── Brand Colors ─────────────────────────────────── */
    --primary: #1E40AF;
    --primary-dark: #1E3A8A;
    --primary-darker: #172554;
    --primary-light: #DBEAFE;
    --primary-50: #EFF6FF;
    --primary-gradient: linear-gradient(135deg, #1E40AF, #3B82F6);

    --accent: #DC2626;
    --accent-dark: #B91C1C;
    --accent-light: #FEE2E2;
    --accent-gradient: linear-gradient(135deg, #DC2626, #EF4444);

    --gold: #D97706;
    --gold-light: #FEF3C7;
    --gold-gradient: linear-gradient(135deg, #D97706, #F59E0B);

    --success: #059669;
    --success-light: #D1FAE5;
    --warning: #D97706;
    --warning-light: #FEF3C7;
    --info: #0284C7;
    --info-light: #E0F2FE;

    /* ── Neutrals ─────────────────────────────────────── */
    --text: #0F172A;
    --text-secondary: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --bg: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-dark: #0F172A;
    --bg-dark-alt: #1E293B;

    /* ── Typography ───────────────────────────────────── */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    /* ── Spacing & Sizing ─────────────────────────────── */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 50px;

    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -2px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.03);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 30px rgba(30,64,175,0.15);
    --shadow-accent: 0 8px 24px rgba(220,38,38,0.25);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset & Base ───────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; color: var(--text); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }

/* ── SVG Icon System ────────────────────────────────── */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}
.icon-box {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.5rem;
}
.icon-box-primary { background: var(--primary-light); color: var(--primary); }
.icon-box-accent { background: var(--accent-light); color: var(--accent); }
.icon-box-gold { background: var(--gold-light); color: var(--gold); }
.icon-box-success { background: var(--success-light); color: var(--success); }
.icon-box-info { background: var(--info-light); color: var(--info); }

/* ── Header ─────────────────────────────────────────── */
.site-header {
    background: linear-gradient(135deg, #1E3A8A, #1E40AF, #2563EB);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: none;
    box-shadow: 0 4px 20px rgba(30,64,175,0.25);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.header-logo img {
    height: 42px;
    width: auto;
    border-radius: var(--radius-sm);
    filter: brightness(1.1);
}
.header-logo span {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
}
.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.header-nav a {
    color: rgba(255,255,255,0.85);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
    letter-spacing: -0.01em;
}
.header-nav a:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

/* ── Hero + Check Code (Premium Layout) ────────────── */
.hero-check {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #020617 0%, #0F172A 20%, #1E3A8A 50%, #1D4ED8 75%, #2563EB 100%);
    min-height: 700px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem 3rem;
    gap: 0;
}

/* Animated gradient overlay */
.hero-check::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 600px 400px at 20% 40%, rgba(59,130,246,0.5) 0%, transparent 70%),
        radial-gradient(ellipse 500px 300px at 80% 20%, rgba(139,92,246,0.3) 0%, transparent 60%),
        radial-gradient(ellipse 400px 400px at 50% 100%, rgba(6,182,212,0.25) 0%, transparent 60%),
        radial-gradient(ellipse 300px 200px at 90% 80%, rgba(236,72,153,0.15) 0%, transparent 50%);
    pointer-events: none;
    animation: heroShift 12s ease-in-out infinite alternate;
}
@keyframes heroShift {
    0% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 0.8; transform: scale(1); }
}

/* Sparkle pattern */
.hero-check::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1.5px 1.5px at 60% 20%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.3), transparent),
        radial-gradient(1.5px 1.5px at 10% 80%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 70% 90%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255,255,255,0.3), transparent),
        radial-gradient(1.5px 1.5px at 30% 10%, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 90% 15%, rgba(255,255,255,0.4), transparent);
    background-size: 200px 200px;
    pointer-events: none;
    animation: sparkleMove 30s linear infinite;
}
@keyframes sparkleMove {
    from { background-position: 0 0; }
    to { background-position: 200px 200px; }
}

/* Floating emojis */
.hero-floats {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}
.hero-float {
    position: absolute;
    font-size: 2rem;
    opacity: 0.15;
    animation: heroFloat 8s ease-in-out infinite;
    filter: drop-shadow(0 0 8px rgba(255,255,255,0.3));
}
.hero-float-1 { left: 5%; top: 15%; animation-duration: 7s; font-size: 2.5rem; opacity: 0.2; }
.hero-float-2 { right: 8%; top: 10%; animation-duration: 9s; animation-delay: -2s; font-size: 1.8rem; }
.hero-float-3 { left: 12%; bottom: 20%; animation-duration: 6s; animation-delay: -4s; font-size: 2.2rem; opacity: 0.18; }
.hero-float-4 { right: 15%; bottom: 15%; animation-duration: 8s; animation-delay: -1s; }
.hero-float-5 { left: 50%; top: 8%; animation-duration: 10s; animation-delay: -3s; font-size: 1.5rem; }
.hero-float-6 { right: 30%; top: 25%; animation-duration: 7.5s; animation-delay: -5s; font-size: 1.8rem; opacity: 0.12; }

@keyframes heroFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(5deg); }
    50% { transform: translateY(-10px) rotate(-3deg); }
    75% { transform: translateY(-25px) rotate(3deg); }
}

/* Hero Text */
.hero-text {
    position: relative;
    z-index: 10;
    text-align: center;
    margin-bottom: 1.75rem;
    animation: slideUp 0.8s ease;
}
.hero-brand { margin-bottom: 0.75rem; }
.hero-logo {
    width: 72px;
    height: 72px;
    filter: drop-shadow(0 4px 20px rgba(255,255,255,0.3));
    animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 4px 20px rgba(255,255,255,0.3)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 4px 30px rgba(255,255,255,0.5)); }
}
.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: #fff;
    text-shadow: 0 2px 30px rgba(0,0,0,0.3);
    margin-bottom: 0.5rem;
}
.hero-title span {
    background: linear-gradient(135deg, #FCD34D, #F59E0B, #FBBF24, #FDE68A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 4px rgba(245,158,11,0.4));
}
.hero-subtitle {
    color: rgba(255,255,255,0.75);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* Check Card */
.check-card {
    max-width: 540px;
    width: 100%;
    position: relative;
    z-index: 10;
    background: #fff;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: 2.25rem 2rem;
    box-shadow:
        0 25px 60px rgba(0,0,0,0.25),
        0 0 0 1px rgba(255,255,255,0.15);
    text-align: center;
    animation: slideUp 0.6s ease 0.2s both;
}
.check-card-glow {
    position: absolute;
    top: -1px; left: -1px; right: -1px; bottom: -1px;
    border-radius: calc(var(--radius-2xl) + 1px);
    background: linear-gradient(135deg, #60A5FA, #818CF8, #A78BFA, #60A5FA);
    background-size: 300% 300%;
    z-index: -1;
    opacity: 0.3;
    filter: blur(14px);
    animation: cardGlow 6s ease infinite;
}
@keyframes cardGlow {
    0%, 100% { background-position: 0% 50%; opacity: 0.2; }
    50% { background-position: 100% 50%; opacity: 0.4; }
}
.check-card h2 {
    font-family: var(--font-display);
    color: var(--text);
    margin-bottom: 0.375rem;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.check-card .subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1.75rem;
    line-height: 1.5;
}
.check-form {
    display: flex;
    gap: 0.625rem;
}
.check-form input {
    flex: 1;
    padding: 15px 20px;
    font-size: 1rem;
    font-family: var(--font);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    transition: var(--transition);
    text-align: center;
    color: var(--text);
    background: #FAFBFF;
}
.check-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(30,64,175,0.1);
    background: #fff;
}
.check-form input::placeholder {
    color: var(--text-light);
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.875rem;
}

/* Mobile hero */
@media (max-width: 640px) {
    .hero-check { min-height: 580px; padding: 1.5rem 1rem 2.5rem; }
    .hero-title { font-size: 2.25rem; }
    .hero-subtitle { font-size: 0.875rem; }
    .hero-logo { width: 56px; height: 56px; }
    .check-card { padding: 1.75rem 1.25rem; }
    .check-form { flex-direction: column; }
    .hero-float { font-size: 1.5rem !important; opacity: 0.1 !important; }
}

/* ── Results below hero ────────────────────────────── */
.results-wrapper {
    padding: 0 0 2rem;
    background: var(--bg);
}

/* ── Buttons ────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 14px 28px;
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 48px;
    text-decoration: none;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 14px rgba(30,64,175,0.3);
}
.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(30,64,175,0.4);
    transform: translateY(-1px);
    color: #fff;
}
.btn-accent {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
    box-shadow: 0 10px 28px rgba(220,38,38,0.35);
    transform: translateY(-2px);
    color: #fff;
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
    min-height: 56px;
    border-radius: var(--radius-lg);
}
.btn-block { width: 100%; }
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ── Result Area ────────────────────────────────────── */
.result-area { max-width: 620px; margin: 0 auto; padding: 0 1.25rem; display: none; }
.result-area.show { display: block; animation: slideUp 0.5s ease; }
.result-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-top: 1.5rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
    border: 2px solid transparent;
}
.result-card.result-win {
    border-color: var(--success);
    background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
}
.result-card.result-lose { border-color: var(--border); }
.result-card.result-error { border-color: var(--accent); background: var(--accent-light); }
.result-card.result-used { border-color: var(--warning); background: var(--warning-light); }

.result-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 2rem;
}
.result-win .result-icon { background: var(--success); color: #fff; }
.result-lose .result-icon { background: var(--border); color: var(--text-muted); }
.result-error .result-icon { background: var(--accent); color: #fff; }
.result-used .result-icon { background: var(--warning); color: #fff; }

.result-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}
.result-win .result-title { color: var(--success); }
.result-lose .result-title { color: var(--text-secondary); }
.result-error .result-title { color: var(--accent); }
.result-message { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 1.5rem; line-height: 1.6; }

.prize-display {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(5,150,105,0.15);
}
.prize-name { font-size: 1.125rem; font-weight: 800; color: var(--success); margin-bottom: 0.25rem; }
.prize-desc { color: var(--text-secondary); font-size: 0.875rem; }

/* ── Claim Form ─────────────────────────────────────── */
.claim-form-container { max-width: 620px; margin: 0 auto; padding: 0 1.25rem; display: none; }
.claim-form-container.show { display: block; animation: slideUp 0.5s ease; }
.claim-form-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-top: 1.5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
}
.claim-form-card h3 {
    text-align: center;
    color: var(--text);
    margin-bottom: 0.25rem;
    font-family: var(--font-display);
    font-size: 1.25rem;
}
.form-group { margin-bottom: 1.125rem; }
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text);
    margin-bottom: 0.375rem;
}
.form-group label .required { color: var(--accent); margin-left: 2px; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font);
    font-size: 0.9375rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: var(--transition);
    color: var(--text);
    background: #fff;
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30,64,175,0.08);
}
.form-group input.error, .form-group textarea.error {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(220,38,38,0.08);
}
.form-group .hint { font-size: 0.75rem; color: var(--text-light); margin-top: 4px; }
.form-group .error-msg { font-size: 0.75rem; color: var(--accent); margin-top: 4px; display: none; }
.form-group .error-msg.show { display: block; animation: fadeIn 0.3s ease; }

.form-alert {
    padding: 0.875rem 1.25rem;
    background: var(--accent-light);
    border: 1px solid rgba(220,38,38,0.2);
    border-radius: var(--radius-md);
    color: var(--accent-dark);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    display: none;
    align-items: center;
    gap: 0.5rem;
}
.form-alert.show { display: flex; animation: slideUp 0.3s ease; }
.form-alert svg { flex-shrink: 0; }

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    cursor: pointer;
    user-select: none;
}
.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: var(--primary);
    cursor: pointer;
}
.form-checkbox span { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.4; }
.form-checkbox a { color: var(--primary); text-decoration: underline; }

/* ── Confirmation ───────────────────────────────────── */
.confirmation-container { max-width: 620px; margin: 0 auto; padding: 0 1.25rem; display: none; }
.confirmation-container.show { display: block; animation: slideUp 0.5s ease; }
.confirmation-card {
    background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
    border: 2px solid var(--success);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-top: 1.5rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
}
.confirmation-icon {
    width: 80px;
    height: 80px;
    background: var(--success);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    animation: scaleIn 0.5s ease;
}
.confirmation-icon svg { width: 40px; height: 40px; stroke: #fff; fill: none; stroke-width: 2.5; }
.confirmation-card h3 {
    color: var(--success);
    font-family: var(--font-display);
    font-size: 1.375rem;
    margin-bottom: 0.5rem;
}
.claim-code-display {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 2px dashed var(--success);
}
.claim-code-label { font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 0.25rem; }
.claim-code-value {
    font-size: 1.75rem;
    font-family: var(--font-display);
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: 0.04em;
}
.hotline-info {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--info-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}
.hotline-info svg { width: 20px; height: 20px; stroke: var(--info); flex-shrink: 0; }
.hotline-info strong { color: var(--primary-dark); }

/* ── Prizes Section ─────────────────────────────────── */
.prizes-section {
    padding: 4rem 0;
    background: linear-gradient(180deg, var(--bg) 0%, #fff 100%);
}
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}
.section-header h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--text);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}
.section-header p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 480px;
    margin: 0 auto;
}
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
}
.section-badge svg { width: 14px; height: 14px; }

.prizes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
.prize-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.prize-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}
.prize-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}
.prize-card.prize-special::before { background: var(--gold-gradient); }
.prize-card.prize-first::before { background: var(--primary-gradient); }
.prize-card.prize-second::before { background: linear-gradient(135deg, #059669, #10B981); }
.prize-card.prize-third::before { background: linear-gradient(135deg, #EA580C, #F97316); }
.prize-card.prize-consol::before { background: linear-gradient(135deg, #7C3AED, #8B5CF6); }

.prize-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
}
.prize-special .prize-badge { background: #FEF3C7; color: #92400E; }
.prize-first .prize-badge { background: var(--primary-light); color: var(--primary-dark); }
.prize-second .prize-badge { background: #D1FAE5; color: #065F46; }
.prize-third .prize-badge { background: #FED7AA; color: #9A3412; }
.prize-consol .prize-badge { background: #EDE9FE; color: #5B21B6; }

.prize-img {
    width: 110px;
    height: 110px;
    object-fit: contain;
    margin: 0 auto 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.08));
}
.prize-card:hover .prize-img {
    transform: scale(1.08);
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.12));
}

.prize-card h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
    color: var(--text);
}
.prize-card .prize-qty {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 600;
}

/* ── Rules / Steps ──────────────────────────────────── */
.rules-section {
    padding: 4rem 0;
    background: #fff;
}
.rules-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}
.rule-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.rule-item:hover {
    background: var(--primary-50);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}
.rule-number {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
}
.rule-item h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}
.rule-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── Contact ────────────────────────────────────────── */
.contact-section {
    padding: 4rem 0;
    background: var(--bg-dark);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.contact-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(30,64,175,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.contact-section .section-header h2 { color: #fff; }
.contact-section .section-header p { color: rgba(255,255,255,0.6); }
.contact-section .section-badge { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.8); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    text-align: center;
    position: relative;
    z-index: 1;
}
.contact-item {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
    transition: var(--transition);
}
.contact-item:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.contact-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}
.contact-icon-wrap svg { width: 24px; height: 24px; stroke: #93C5FD; }
.contact-item h4 { color: #fff; font-size: 1rem; margin-bottom: 0.375rem; }
.contact-item p { color: rgba(255,255,255,0.6); font-size: 0.875rem; line-height: 1.6; }
.contact-item a { color: #93C5FD; font-weight: 600; }
.contact-item a:hover { color: #BFDBFE; }

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
    background: var(--bg-dark);
    border-top: 1px solid rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.4);
    text-align: center;
    padding: 1.5rem 0;
    font-size: 0.8125rem;
}
.site-footer a { color: rgba(255,255,255,0.6); }
.site-footer a:hover { color: #fff; }

/* ── Spinner ────────────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ── Alerts ─────────────────────────────────────────── */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.alert-error { background: var(--accent-light); color: var(--accent-dark); border: 1px solid rgba(220,38,38,0.2); }
.alert-success { background: var(--success-light); color: var(--success); border: 1px solid rgba(5,150,105,0.2); }

/* ── Rules Page ─────────────────────────────────────── */
.rules-page { padding: 3rem 0; background: #fff; min-height: 60vh; }
.rules-content { max-width: 800px; margin: 0 auto; }
.rules-content h1 { color: var(--text); margin-bottom: 1.5rem; text-align: center; font-family: var(--font-display); font-size: 1.75rem; }
.rules-content h2 { color: var(--primary-dark); font-size: 1.125rem; margin-top: 2rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--primary-light); }
.rules-content p, .rules-content li { color: var(--text-secondary); line-height: 1.8; margin-bottom: 0.5rem; }
.rules-content ul, .rules-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.prize-table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.5rem; font-size: 0.875rem; border-radius: var(--radius-md); overflow: hidden; }
.prize-table th, .prize-table td { padding: 0.75rem 1rem; text-align: left; border: 1px solid var(--border); }
.prize-table th { background: var(--primary-50); font-weight: 700; color: var(--primary-dark); }
.prize-table tr:nth-child(even) td { background: #FAFBFF; }

/* ── Animations ─────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }
@keyframes slideUp { from { opacity: 0; transform: translateY(24px) } to { opacity: 1; transform: translateY(0) } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.5) } to { opacity: 1; transform: scale(1) } }
@keyframes spin { to { transform: rotate(360deg) } }
@keyframes shimmer { 0% { background-position: -200% 0 } 100% { background-position: 200% 0 } }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ─────────────────────────────────────── */
@media (min-width: 640px) {
    .prizes-grid { grid-template-columns: repeat(2, 1fr); }
    .rules-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
    h1 { font-size: 2.25rem; }
    .section-header h2 { font-size: 2rem; }
    .hero-check { min-height: 480px; padding: 3rem 2rem 4rem; }
    .check-card { padding: 2.5rem 3rem; }
    .contact-grid { grid-template-columns: repeat(3, 1fr); }
    .prizes-section { padding: 5rem 0; }
    .rules-section { padding: 5rem 0; }
    .contact-section { padding: 5rem 0; }
}
@media (min-width: 1024px) {
    .prizes-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-check { min-height: 520px; }
}
@media (min-width: 1280px) {
    .prizes-grid { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 480px) {
    .check-form { flex-direction: column; }
    .check-form .btn { width: 100%; }
    .header-nav { display: none; }
    .hero-check { min-height: 360px; padding: 1.5rem 1rem 2.5rem; }
    .check-card { padding: 1.75rem 1.25rem; }
    .check-card h2 { font-size: 1.25rem; }
    .result-card { padding: 2rem 1.5rem; }
    .claim-form-card { padding: 2rem 1.5rem; }
    .prize-img { width: 90px; height: 90px; }
}

#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}